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Bound on the tau neutrino magnetic moment from the BEBC beam dump experiment

Physics Letters B 280:1-2 (1992) 153-158

Authors:

AM Cooper-Sarkar, S Sarkar, J Guy, W Venus, PO Hulth, K Hultqvist

Abstract:

We have searched for electrons scattered in the forward direction by neutrinos produced by dumping a 400 GeV/c proton beam on a copper target. We estimate the number of tau neutrinos produced from the decays of Ds mesons in the dump. The data limit the possible magnetic moment of tau neutrinos to be below 5.4×10-7 ωB. This rules out the suggestion that tau neutrinos of mass O(MeV) constitute the dark matter in the universe. © 1992.
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Measurements of semileptonic branching fractions of B mesons at the ϒ(4S) resonance

Physical Review D American Physical Society (APS) 45:7 (1992) 2212-2231

Authors:

S Henderson, K Kinoshita, F Pipkin, M Procario, M Saulnier, R Wilson, J Wolinski, D Xiao, R Ammar, P Baringer, D Coppage, R Davis, P Haas, M Kelly, N Kwak, Ha Lam, S Ro, Y Kubota, JK Nelson, D Perticone, R Poling, S Schrenk, G Crawford, R Fulton, T Jensen, DR Johnson, H Kagan, R Kass, R Malchow, F Morrow, J Whitmore, P Wilson, D Bortoletto, D Brown, J Dominick, RL McIlwain, DH Miller, M Modesitt, SF Schaffner, EI Shibata, IPJ Shipsey, M Battle, H Kroha, K Sparks, EH Thorndike, C-H Wang, MS Alam, IJ Kim, WC Li, B Nemati, V Romero, CR Sun, P-N Wang, MM Zoeller, M Goldberg, T Haupt, N Horwitz, V Jain, Rosemary Kennett, MD Mestayer, GC Moneti, Y Rozen, P Rubin, T Skwarnicki, S Stone, M Thusalidas, W-M Yao, G Zhu, AV Barnes, J Bartelt, SE Csorna, T Letson, J Alexander, M Artuso, C Bebek, K Berkelman, D Besson, T Browder, DG Cassel, E Cheu, DM Coffman, JW DeWire, PS Drell, R Ehrlich, RS Galik, M Garcia-Sciveres, B Geiser, B Gittelman, SW Gray, AM Halling, DL Hartill, BK Heltsley, K Honscheid, J Kandaswamy, N Katayama, R Kowalewski, DL Kreinick, JD Lewis, GS Ludwig, J Masui, J Mevissen, NB Mistry, S Nandi, CR Ng, E Nordberg, C O'Grady, JR Patterson, D Peterson, M Pisharody, D Riley, M Sapper, M Selen, A Silverman, H Worden, M Worris, AJ Sadoff, P Avery, A Freyberger, J Rodriguez, J Yelton
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Ds+ decays to ηπ+ and η’π+

Physical Review Letters American Physical Society (APS) 68:9 (1992) 1275-1278

Authors:

J Alexander, C Bebek, K Berkelman, D Besson, TE Browder, DG Cassel, E Cheu, DM Coffman, PS Drell, R Ehrlich, RS Galik, M Garcia-Sciveres, B Geiser, B Gittelman, SW Gray, DL Hartill, BK Heltsley, K Honscheid, J Kandaswamy, N Katayama, PC Kim, DL Kreinick, JD Lewis, GS Ludwig, J Masui, J Mevissen, NB Mistry, S Nandi, CR Ng, E Nordberg, C O’Grady, JR Patterson, D Peterson, M Pisharody, D Riley, M Sapper, M Selen, H Worden, M Worris, P Avery, A Freyberger, J Rodriguez, J Yelton, S Henderson, K Kinoshita, F Pipkin, M Saulnier, R Wilson, J Wolinski, D Xiao, H Yamamoto, AJ Sadoff, R Ammar, P Baringer, D Coppage, R Davis, M Kelly, N Kwak, H Lam, S Ro, Y Kubota, JK Nelson, D Perticone, R Poling, S Schrenk, MS Alam, IJ Kim, B Nemati, V Romero, CR Sun, P-N Wang, MM Zoeller, G Crawford, R Fulton, KK Gan, T Jensen, H Kagan, R Kass, R Malchow, F Morrow, J Whitmore, P Wilson, F Butler, X Fu, G Kalbfleisch, M Lambrecht, P Skubic, J Snow, P-L Wang, D Bortoletto, DN Brown, J Dominick, RL McIlwain, DH Miller, M Modesitt, EI Shibata, SF Schaffner, IPJ Shipsey, M Battle, J Ernst, H Kroha, S Roberts, K Sparks, EH Thorndike, C-H Wang, M Artuso, M Goldberg, T Haupt, N Horwitz, R Kennett, GC Moneti, Y Rozen, P Rubin, T Skwarnicki, S Stone, M Thusalidas, W-M Yao, G Zhu, AV Barnes, J Bartelt, SE Csorna, V Jain, T Letson, MD Mestayer, DS Akerib, B Barish, DF Cowen, G Eigen, R Stroynowski, J Urheim, AJ Weinstein, RJ Morrison, H Tajima, D Schmidt, M Procario, M Daoudi, WT Ford, DR Johnson, K Lingel, M Lohner, P Rankin, JG Smith
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Ds+ decays to ηρ+, η’ρ+, and φρ+

Physical Review Letters American Physical Society (APS) 68:9 (1992) 1279-1282

Authors:

P Avery, A Freyberger, J Rodriguez, J Yelton, S Henderson, K Kinoshita, F Pipkin, M Saulnier, R Wilson, J Wolinski, D Xiao, H Yamamoto, AJ Sadoff, R Ammar, P Baringer, D Coppage, R Davis, M Kelly, N Kwak, H Lam, S Ro, Y Kubota, JK Nelson, D Perticone, R Poling, S Schrenk, MS Alam, IJ Kim, B Nemati, V Romero, CR Sun, P-N Wang, MM Zoeller, G Crawford, R Fulton, KK Gan, T Jensen, H Kagan, R Kass, R Malchow, F Morrow, J Whitmore, P Wilson, F Butler, X Fu, G Kalbfleisch, M Lambrecht, P Skubic, J Snow, P-L Wang, D Bortoletto, DN Brown, J Dominick, RL McIlwain, DH Miller, M Modesitt, EI Shibata, SF Schaffner, IPJ Shipsey, M Battle, J Ernst, H Kroha, S Roberts, K Sparks, EH Thorndike, C-H Wang, M Artuso, M Goldberg, T Haupt, N Horwitz, R Kennett, GC Moneti, Y Rozen, P Rubin, T Skwarnicki, S Stone, M Thusalidas, W-M Yao, G Zhu, AV Barnes, J Bartelt, SE Csorna, V Jain, T Letson, MD Mestayer, DS Akerib, B Barish, DF Cowen, G Eigen, R Stroynowski, J Urheim, AJ Weinstein, RJ Morrison, H Tajima, D Schmidt, M Procario, M Daoudi, WT Ford, DR Johnson, K Lingel, M Lohner, P Rankin, JG Smith, J Alexander, C Bebek, K Berkelman, D Besson, TE Browder, DG Cassel, E Cheu, DM Coffman, PS Drell, R Ehrlich, RS Galik, M Garcia-Sciveres, B Geiser, B Gittelman, SW Gray, DL Hartill, BK Heltsley, K Honscheid, J Kandaswamy, N Katayama, PC Kim, DL Krenick, JD Lewis, GS Ludwig, J Masui, J Mevissen, NB Mistry, S Nandi, CR Ng, E Nordberg, C O’Grady, JR Patterson, D Peterson, M Pisharody, D Riley, M Sapper, M Selen, H Worden, M Worris
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Direct measurement of the W-γ coupling at the CERN pp Collider

Physics Letters B 277:1-2 (1992) 194-202

Authors:

J Alitti, G Ambrosini, R Ansari, D Autiero, P Bareyre, IA Bertram, G Blaylock, P Bonamy, K Borer, M Bourliand, D Buskulic, G Carboni, D Cavalli, V Cavasinni, P Cenci, JC Chollet, C Conta, G Costa, F Costantini, L Cozzi, A Cravero, M Curatolo, A Dell'Acqua, T DelPrete, RS DeWolf, L DiLella, Y Ducros, GF Egan, KF Einsweiler, B Esposito, L Fayard, A Federspiel, R Ferrari, M Fraternali, D Froidevaux, G Fumagalli, JM Gaillard, F Gianotti, O Gildemeister, C Gössling, VG Goggi, S Grünendahl, K Hara, S Hellman, J Hrivnac, H Hufnagel, E Hugentobler, K Hultqvist, E Iacopini, J Incandela, K Jakobs, P Jenni, EE Kluge, N Kurz, S Lami, P Lariccia, M Lefebvre, L Linssen, M Livan, P Lubrano, C Magneville, L Mandelli, L Mapelli, M Mazzanti, K Meier, B Merkel, JP Meyer, M Moniez, R Moning, M Morganti, L Müller, DJ Munday, M Nessi, F Nessi-Tedaldi, C Onions, T Pal, MA Parker, G Parrour, F Pastore, E Pennacchio, JM Pentney, M Pepe, L Perini, C Petridou, P Petroff, H Plothow-Besch, G Polesello, A Poppleton, K Pretzl, M Primavera, M Punturo, JP Repellin, A Rimoldi, M Sacchi, P Scampoli, J Schacher, B Schmidt, V Simak, SL Singh, V Sondermann

Abstract:

The process pp→evγ+X is studied as √s=630 GeV. The observed signal is used to extract a direct measurement of the parameters κ and λ which define the magnetic dipole and electric quadrupole moments of the W boson and therefore the WWγ coupling. We find κ=1+2.6-2.2 and λ=0+1.7-1.8 and their 95% confidence limits -3.5<κ<5.9 and -3.6<λ<3.5. The results are model indepedent and in good agreement with the standard model values, κ=1 and λ=0. © 1992.
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